1 /****************************************************************************** 2 * 3 * Copyright (C) 2015 The Android Open Source Project 4 * 5 * Licensed under the Apache License, Version 2.0 (the "License"); 6 * you may not use this file except in compliance with the License. 7 * You may obtain a copy of the License at: 8 * 9 * http://www.apache.org/licenses/LICENSE-2.0 10 * 11 * Unless required by applicable law or agreed to in writing, software 12 * distributed under the License is distributed on an "AS IS" BASIS, 13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 14 * See the License for the specific language governing permissions and 15 * limitations under the License. 16 * 17 ***************************************************************************** 18 * Originally developed and contributed by Ittiam Systems Pvt. Ltd, Bangalore 19 */ 20 21 /** 22 ******************************************************************************* 23 * @file 24 * ih264e_me.h 25 * 26 * @brief 27 * Contains declarations of h264 me 28 * 29 * @author 30 * ittiam 31 * 32 * @remarks 33 * 34 ******************************************************************************* 35 */ 36 37 #ifndef _IH264E_ME_H_ 38 #define _IH264E_ME_H_ 39 40 41 /*****************************************************************************/ 42 /* Constant Macros */ 43 /*****************************************************************************/ 44 45 /** 46 ****************************************************************************** 47 * @brief Skip Bias value for P slice 48 ****************************************************************************** 49 */ 50 #define SKIP_BIAS_P 0 51 52 /** 53 ****************************************************************************** 54 * @brief Skip Bias value for B slice 55 ****************************************************************************** 56 */ 57 #define SKIP_BIAS_B 0 58 59 60 /*****************************************************************************/ 61 /* Function Macros */ 62 /*****************************************************************************/ 63 64 /** 65 ****************************************************************************** 66 * @brief compute median of 3 elements (a, b, c) and store the output 67 * in to result. This is used for mv prediction 68 ****************************************************************************** 69 */ 70 #define MEDIAN(a, b, c, result) if (a > b){\ 71 if (b > c)\ 72 result = b;\ 73 else {\ 74 if (a > c)\ 75 result = c;\ 76 else \ 77 result = a;\ 78 }\ 79 }\ 80 else {\ 81 if (c > b)\ 82 result = b;\ 83 else {\ 84 if (c > a)\ 85 result = c;\ 86 else \ 87 result = a;\ 88 }\ 89 } 90 91 /*****************************************************************************/ 92 /* Function Declarations */ 93 /*****************************************************************************/ 94 95 void ih264e_init_mv_bits(me_ctxt_t *ps_me); 96 97 ih264e_skip_params_ft ih264e_find_pskip_params; 98 99 ih264e_skip_params_ft ih264e_find_pskip_params_me; 100 101 ih264e_skip_params_ft ih264e_find_bskip_params; 102 103 ih264e_skip_params_ft ih264e_find_bskip_params_me; 104 105 void ih264e_get_mv_predictor(enc_pu_t *ps_left_mb_pu, enc_pu_t *ps_top_row_pu, 106 enc_pu_mv_t *ps_pred_mv, WORD32 i4_ref_list); 107 108 ih264e_compute_me_ft ih264e_compute_me_multi_reflist; 109 110 ih264e_compute_me_ft ih264e_compute_me_single_reflist; 111 112 void ih264e_init_me(process_ctxt_t *ps_proc); 113 114 void ih264e_compute_me_nmb(process_ctxt_t *ps_proc, UWORD32 u4_nmb_count); 115 116 void ih264e_mv_pred(process_ctxt_t *ps_proc, WORD32 i4_reflist); 117 118 void ih264e_mv_pred_me(process_ctxt_t *ps_proc, WORD32 i4_ref_list); 119 120 #endif /* _IH264E_ME_H_ */ 121